20 .OBM contamination

[@MohsinKhan-os4qn]

Thanks you Sir
Really Appreciate your Response.
Thanks again for your Work

[@mohamedbadawy739]

جزاك الله خيرا

[@khelifabeddief6980]

Thanks sir

[@mohittagotra205]

Due to language barrier i cannot understand. Please explain in English or send me these notes

[@mohittagotra205]

Good Job sir. But can you send me these notes to my email address. I shall be very thankful to you.